Insulator support or bracket



Jan. 1, 1924 C. L. PEIRCE, 'JR

INSULATOR SUPPORT OR BRACKET Filed Feb. 25 1918 F'I B2.

R O T N E V N line 11 of Fi Patented Jan. 1, 1924.

UNITED STATES PATENT OFFICE.

OEARLES I PEIRCE, JR., OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO HUBBARD & COMPANY, A CORPORATION OF PENNSYLVANIA.

INSULATOR SUIPORT OB BRACKET.

Application filed February 23, 1918. Serial No. 218,802.

To all whom it may concern:

Be it known that I, CHARLES L. Pmnon, Jr., a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of'Pennsylvania, have made a new and useful Invention in Insulator Supports or Brackets, of which the following is a specification.

This invention relates to insulators and brackets for rigidly supporting the same and the objects thereof are to provide an insulator and support by means of which wires may be attached to buildings without the use of tie wires; an insulator having relatively large leakage distance and good drainage; an insulator and metal support for the same in which the strains to which the support is subjected are practically only tension strains and those to which the in sulator is subjected are practically only compression strains; a support which will allow broken insulators to be replaced without removing the support from the building -to which it is attached; an insulator and support which may befastened in any desired position on a building without impairment of the insulation; a combined insulator and support for use on buildings in which the insulator has a wire receiving hole through which the wire may be strung and slidably retained Without the use of tie wires or equivalent fastening means.

A further object is to provide an insulator and supporting bracket therefor which will be cheap to manufacture and which will have great eral efficiency.

These as well as other objects which will readily appear to those skilled in this art, I attain in the device shown in the drawings accompanying and forming apart of this application and in which Figure 1 is a view partially. in plan and partially in section of a device embodyin this invention, the sectional portion being taken on g. 2; Fig. 2 is a view partially in side elevation and partially in sectional elevation of the device, the sectional. portion being taken on line 2-2 of Fig. 1, and- Fig. 3 is a view in cross section taken on line 3-3 of Fi 1.

The supporting racket consists of a back piece 4 made up from a narrow channel section of iron or steel and to the flat face of this channel section substantially U strength, stability and gen-- with a su shaped supports or insulator jaws 5 and. 5

are rigidly applied. These aws or supports are bent up from strap metal preferably having the same Width as the back piece.

0 provide secure seats for the 6 are applied over the central portion 7 of each U shaped member. These straps are pressed from sheet metal and each has the central body portion 8 of arched shape for saddling over the central portion of the U shaped member between the support arms, and wings-or feet 9 and 9" extend laterally from the body of the strap to provide seats for the fixture. The seats have bolt holes extending therethrough by means of which the bracket may be secured to a supporting element such as the side of a building. Each strap is secured in place by the same rivet 11 which holds a U shaped member to the back piece. In other Words a single rivet passes through the strap, U shaped member and back piece as clearly shoryn in Figs. 2 and 3. The bends 12 and 13 between the wings and body of the stra are rounded and to add strength longitu inally extendin corrugations 14 are formed in the bends.

%he insulating members 15 are referably made of porcelain and being ormed to provide relatively large leakage distance and good drainage are inserted within the U shaped member and held rigidly in place by arms 5, 5 which are spaced apart so as to snugly fit the insulators. A retaining bolt 16 passes through a hole 17 formed in the insulator for that purpose and holes 18, 18", in the jaws 5 and 5?. Each insulator is provided with a wire receiving eye or passage 20 which passes through the insulator back of the supporting bolt 19 or rather between the supporting bolt and body portion 4 of the support bracket. The insulator shown in the drawings isprovided port arm receiving groove in each latera end face, which extends outwardly from the base of the insulator toward the outer end thereof. Each groove, however, terminates in a shoulder near the outer end of the support. With this arrangement, the grooves co-act with the arms Having thus described my invention what i I claim is- 1. The combination with an insulator support having outwardly projecting arms, of an insulator straddled by said arms and having an arm receiving groove formed in each lateral face thereof, a wire receiving aperture extending therethrough intermediate said faces, a peripheral groove extending partially around the insulator and terminating at each end in said wire receiving aperture and a bolt receiving aperture terminating in said arm receiving grooves, and a bolt extending through said bolt receiving aperture and-through registering apertures formed in said arms.

2. The combination with an insulator support having outwardly projecting arms, of an insulator movable longitudinally to position between said arms and having a wire receiving aperture formed therein intermediate the arm engaging sides thereof, a bolt receiving aperture extending at right angles to the wire receiving aperture and located between said wire receiving aperture and the outer end of the insulator and a bolt extending through said bolt receiving aperture and through apertures formed in said arms.

3, The combination with an'insulator support having a U-shaped member forming outwardly projecting arms, of an insulator located between and projecting laterally beyond said arms and having a wire receiving aperture extending therethrough between the faces thereof adjacent said arms and a bolt receiving aperture extending therethrough at right angles to the wire receiving aperture and a bolt extending through said bolt receiving aperture and through registcring apertures formed in said arms.

4. The combination with an insulator support provided with parallel outwardly projecting arms having bolt receiving apertures adjacent the ends thereof, of an insulator located between said arms and having an arm receiving groove formed in opposite side faces thereof, a Wire receiving aperture extending therethrough between said arms and a bolt receiving aperture extending therethrough beyond said wire receiving aperture and registering with the apertures in said arms and a bolt extending through the apertures in said arms and said bolt receiving aperture in the insulator.

In testimony whereof, I have hereunto subscribed my name this nineteenth day of February, 1918.

CHARLES L. PEIRCE, JR. 

